Description: For the harger and portable power source of 3C products, and other charging equipment. Improve the charging efficiency, protect the charging equipment. Test voltage and current of the USB port. Store volumes of data. Applicaions: monitor the real-time Voltage, Current, Capacity while phone is charging. Specification: Material: Plastic Color: White Size: Approx. 84×29×12mm/ 3.31×1.14×0.47 inch Input voltage range(V): 3V-9V Voltage resolution: 0.01V Voltage monitoring accuracy: ±1% Current monitoring range (A): 0A-3A Current monitoring accuracy: ±(1%+2) Current resolution: 0.01A Capacity: 0-9999mAH Capacity data memory: 10 groups Display: LCD Warning: Yes Function of the button: Yes Pollution level: 2 Operating temperature: 0? to 40? Storage temperature: -10? to 50? Relative humidity:
